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Siemens B390GFHH - GFCI Circuit Breaker 90A 3-Pole

Siemens
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Siemens B390GFHH Circuit Breaker is a 3-pole molded case circuit breaker designed for ground fault protection with a 5mA GFCI function. It operates at a voltage rating of 208/120 VAC and a current rating of 90 Amperes, providing reliable overcurrent and ground fault interruption. The unit features a compact, industrial-grade construction suitable for panelboard installation, with a robust thermoplastic housing and thermal-magnetic trip mechanism. It complies with UL 489 and CSA standards, ensuring safety and performance in commercial and industrial electrical systems. Typical applications include branch circuit protection in lighting, power distribution, and equipment requiring sensitive ground fault detection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker with GFCI, thermal-magnetic trip
  • Voltage Rating: 208/120 VAC
  • Current Rating: 90 A
  • Poles: 3
  • Functions: GFCI 5mA
  • Dimensions: Standard 3-pole frame size
  • Standards: UL 489, CSA
  • Applications: Commercial and industrial branch circuit protection, ground fault protection
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Approx. 6 x 4 x 3 inches
  • Phase: 3-phase
  • Voltage: 208/120 V
  • Amperage: 90 A
  • AIC rating: 10 kA @ 240 VAC
  • Connection: Line and load lugs
  • Protection: Overcurrent and ground fault
  • Frame Size: B
  • Trip Type: Thermal-magnetic
  • Panel Type: Siemens panelboards
  • Breaker Type: GFCI
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: #14 to #2 AWG
  • Metal Type: Copper/aluminum rated
  • Panel Style: Bolt-on
  • Bus Type: Plug-in
  • Fuse Class: Not applicable
  • Insulation Temperature: 75°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Bolt-on
  • Hz: 60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 90 A
  • Dist Voltage: 208/120 V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 90 A
  • Full Load Amp Minimum: 90 A
  • Enclosure: Open type
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper/aluminum
  • Amperage Maximum: 90 A
  • Amperage Minimum: 90 A
  • Nema Rating: 1
  • Switch Style: Toggle
  • Wire Size: #14 to #2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lug
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA
  • Compatible Frames: Siemens B frame
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: B
  • Current Rating: 90 A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 783643123456
  • GTIN: 00783643123456